Asymmetry measure of the velocity v_asym and velocity dispersion σ_asym fields for the four galaxies analyzed here. Symbol types distinguish the different systems: the square represents IRAS F10567-4310, the triangle is IRAS F11255-4120, the circle is IRAS F04315-0840, and the diamond represents IRAS F21453-3511. Blue and green symbols represent different morphological types, respectively class 0 and class 2 objects.